Device for perforating figured iron.



H. KOEPPLINGER.

DEVICE FOR PERFORATING FIGURED IRON.

APPLIOATION FILED JUNE 27, 1910.

989,159, Patented Apr. 11,1911.

PATENT OFFICE,

HERMANN lKdEPPLINGER, F VIENNA, AUSTRIA-HUNGARY.

DEVICE FOR PEB/FORATING FIGURED IRON.

Specification, Letters Patent.

Patented Apr. 11, 1911.

Application filed June 27, 1910; Serial No. 588,954.

"gary, and a resident of Herklotzgasse 23,

Vienna, XV, Hungary, foratlng Fi clare the 0 exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to devices for perforating figured iron for making they cross work of windows.

in the Empire of Austria- 'have: nvented a Device for Perured Iron; and I do hereby de- When making known window cross-work of figuredliron it is necessary to provide the crossbars with holes which enable the passage of thecrossing stay-bars. In general, the figured iron employed is of T-shaped section, so that for making the hole it is necessary to bend the flange and to punch an aperture in the Web.

Accordingto my invention, the flange is bent by a new kind of tool which is guided rectilinearly in the'direction of the flange and is of gradually increasing cross-section similar to'the bend which is to be made.

Some illustrative-embodiments of my invention are represented by way of example in the accompanying drawing, wherein:

Figures 1 and 2 are vertical sectional elevation, and top plan View, respectively, showing one form of ,my apparatus comprising the new kind of tool, while Figs. 3 to 5 show a modified form of my apparatus comprising a modified form I being a vertical sectionalelevation, Fig. 4 a top plan view and Fig. 5 a perspective vlew.

Referrin firstly to Figs. 1 and 2, the

' tool 1 is gu1ded rectilinearly on the one hand in its holder, not shown, and on the other hand in theswage 2, while the piece of work 3 is supported in the swage at the two sides of the bend 4 which is to be made. As will be understood from the drawing, the

tool is guided at the face 5 of the swagcbefore it acts onthe piece of work, this arurpose of prevent ing' the tool being sub ected to prejudical bending strains and assuring that the flange is se ar'ated directly at the joint between the ange and the web. When the tool is forced downward all the varioussections of the same act in order and consequently enlowing to be a full, clear, and

lar e the aperture made by the point of the too and bend the flange.

An important advantage obtained by employing my new apparatus comprising the new tool consists in the direction of motion for the bending of the flange coinciding with the tools acting like punches on the web, so that such can be connected directly to the tool. Forexam 1e, if a'windowt-bar is to be worked accor ing to a process, in which it is necessary, for making the a erture through which the bar is to be pus ed, to punch a trapezoidal hole in the web, then to bend the flange and finally to punch alongitudinal aperture" connected to the trapezoidal aperture, Imay employ the apparatus which is represented in Figs. 3 to 5 and admits of the manufacture in one sin 1e operation. Referring to these figures, tie tool has a trapezoidal section at its bottom end 6 and enables a trapezoidal hole to be made in the web when a suitable swage is employed. The conical part 7 of the tool adjoining the trapezoidal end '6 serves for making the bend, its section being similar to the bend and gradually increasing insize.

It is preferable to avoid sharpedge's on the part 7- and to calibrate the bend by a prismatic part 8 which is connected with the part 7 and cooperates with the suitablyshaped swage 9. The top end 10 of the tool has a section like the aperture which is to be made, so that the hole connected with the trapezium can be made by this part. For successful operation, it is necessary, in this. case also, to support the tool as soon as the part causing the-bend operates, For this purpose, the hole which the part Got the tool makes is trapezoidal, so that this partcan be supported at the faces 11015 the swage. Further, it is essential to make the part 6 sufficiently long in order that the tool may be guided in the' swage under the recess 12, which passes through the latter and holds the web of the tool, as soon as the conical the recess 12.

Owing to the friction occurring when making the bend, the flange is exposed in' the direction of the movement of the tool to bending strains which tends to deform the bent part. According to my invention this is prevented-by special. means on the swage.-

These means consist of a displaceable plate part 7 acts on the part .of the flange opposite bent at any time, and is pressed by a spring 1. L against the tool and shifted by the conical part of the tool in proportion as the bending proceeds.

As seen from Fig. 5, the part 9" of the swage which receives the flange of the piece of Work is displaceable along a dovetail guide and is-held in the operative position by a Wedge which can be turned. The

part 9 must he displaceable in order to be able to remove from the swage the piece of Work aftcrit has been bent.

What I claim as my invention and desire to secure by Letters Patent is:

1. In means for making apertures in flanged figured iron, a tool guided rectilinearly in the direction of the flange, the section of the tool being similar to the bend to be made in the flange and having a long sharp taper extending to its acting or en tering end, substantially as described.

2. In means for making apertures in I flanged figured iron, a tool guided rectilinearly in the direction of theflange, the section of the tool being similar to the bend to be 'made in the flange and having a long sharp taper extending toits' acting or entering end, and punching parts arranged on said tool, substantially as described.

3. In means for making apertures in flanged figured iron, a tool formed as a punch at its bottom end and guided rectilinearly inthe direction of the flange, the section. of the tool being similar to the bend to'be made in the flange and having along sharp taper extending to its acting or en tering end, substantially as described.

4. In means for making apertures in flanged figured iron, a tool guided rectilinearly in the direction of the flange and having a section similar to the bend to be made in the flange and having a long sharp taper extendingto' its acting or entering end, a punching part on the bottom end of said tool and 'a punching part at one side of the upper part of said tool, substantially as "described.

5. In means for making apertures in flanged figured iron, the combination with aswage for holding the figured'iron of a tool uided rectilinearly by the, swage in the direction of the flangeof the figured iron, the section of the tool being similar to the bend to be made in the flange and gradually increasing in size, substantially as dc scribed.

' 6. In means for makingfapertures in flanged figured iron, the combination with a swage com-prising a fixed part and a springpressed movable part for holding the figured iron with the flange abutting against the movable part, of a tool guided rectiline- 'arly by the swage in the directionof'the 

